code: def setUp(self):
      self._base_dir = os.path.join(self.get_temp_dir(), "base_dir")
      gfile.makedirs(self._base_dir)
  
imports: import os.path
  from tensorboard import test
  from tensorboard.compat.tensorflow_stub import compat, errors
  from tensorboard.compat.tensorflow_stub.io import gfile
label_desc: Use image node_id 1 for calling the FileIoTest obj's underlying member method code with example usage: obj.setUp() without return types